Chase-holding device for printing-presses.



No. 718,634. PATENTED JAN.'20, 1903.

- R. E. & A. vKEMPER. CHASE HOLDING DEVICE FOR PRINTING PRESSES.

APPLICATION FILED APR. 25, 1902.

NO MODEL.

WIT/V52; v I Q Q [/VVENTORS %"T% @1 6 '1 WW '1 H mmey- UNITED STATES PATENT OFFICE.

ROBERT E. KEMPER AND ARTHUR KEMPER, OF RENSSELAER, NEW YORK.

CHASE-HOLDING DEVICE FOR PRlNTlNG-PRESSES.

SIEECIFICATION forming part of Letters Patent No. 718,634, dated January 20, 1903.

Application filed April 26,1902.

T0 00% whom it may concern.-

Be it known that we, ROBERT E. KEMPER and ARTHUR KEMPER, citizens of the United States, residing at Rensselaer, in the county of Rensselaer and State of New York, have invented certain new and useful Improvementsin Chase-Holding Devices for Printing- Presses; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention is an improvement in chaseholding devices for platen printing-presses; and it consists in the novel features of construction hereinafter described, reference being had to the accompanying drawings, which show one form in which we have contemplated embodying our invention and a slight modification thereof, and the said invention is fully disclosed in the following description and claims. 7

Referring to the drawings, Figure 1 is a vertical sectional view of a chase-holding device embodying our invention. Fig. 2 is a horizontal section on the line 2 2 of Fig. 1. Fig. 3 is a vertical sectional view similar to Fig. 1, showing a slight modification of the invention.

The object of this invention is to provide means for holding the chase upon the typebed and at the same time permitting the chase to be adjusted vertically upon the type-bed for the purpose of regulating the upper and lower margins of the printed sheets.

Referring to Figs. 1 and 2, A represents the type-bed of a platen printing-press, which is preferably provided on its rear face with horizontal strengthening-Webs a.

B represents the chase, which it is desired to secure upon the type-bed and to adjust vertically thereon.

Adjacent to the lower edge of the type-bed we provide a vertically-ad j ustable chase-holding device O,,preferably having a beveled face 0 for engaging the lower edge of the chase, so as to hold it against the type-bed. This vertically-adjustable chase-holding device or hook C is preferably formed integrally with (or rigidly secured to) a vertical adj usting-rod D, capable of vertical movement in guides on the rear space of the type-bed, said Serial No. 104,703. model.)

guides being preferably formed by suitable guiding-apertures in the webs a, as shown. The upper end of the adjusting-rod B is provided with a threaded portion to receive an adjusting-nut d and jam-nut d. The chasehook O is preferably provided with a platen rear face 0, which bears against the face of the type-bed, as clearly shown in Fig. 2, to prevent the adj usting-rod from turning in its guides.

The n pper edge of the type-bed is provided with a spring-catch E of the usual construction to engage the upper edge of the chase, and said catch will have a sufficient range of movement to accommodate the vertical adj ustment of the lower chase-hook.

It will be seen that by means of the adjusting-nut d and jam-nut d the lower chasehook can be adjusted vertically and secured in its adjusted position, thereby adjusting the position of the chase upon the type-bed, so as to secure the desired margins at the top and bottom of the printed sheets.

The type-bed may be provided with one or more of these chase-holding devices, as may be desired.

In Fig. 3 we have shown a slight modification of our invention, in which A represents the type-bed; B, the chase 3 O,the lower chasehook; D, the vertical adjusting-rod, provided at its upper end with adjusting-nut d and jam-nut d In this instance the upper end of the adjusting-rod D carries at its upper end the spring-catch E, which is pivotally connected to a boss or support e, riveted or otherwise secured to the upper end of the adjusting-rod, said boss having also secured to it a spring e which engages and actuates E. In this case the spring chase-holding catch moves vertically with the lower chase-hook when the latter is adjusted.

What we claim, and desire to secure by Letters Patent, is

1. In a platen printing-press,-the combination with the type-bed, of an adjustable chaseholding device adjacent to one edge of the type-bed, adapted to support the chase and an independently-actuated, movable catch located adjacent to the opposite edge of the type-bed for engaging the upper edge of the type-bed, whereby the chase can be removed or placed in position without moving said adjust-able device, and whereby the position of the chase upon the type-bed may be adjusted if desired, substantially as described.

2. In a platen printing-press, the combination with the type-bed, of an adjustable chaseholding device adjacent to the lower edge of said type-bed, and adapted to support the chase, and a spring-actuated catch, located at the upper edge of the type-bed for engaging the upper edge of the chase, whereby the chase can be removed or placed in position Without moving said adjustable device, and whereby the position of the chase upon the type-bed may be adjusted when desired, substantially as described.

3. In a platen printing-press, the combination with the type-bed, of a lower chase-support, adjustable Vertically, an adjusting-rod ROBERT E. KEMPER. ARTHUR KEMPER.

VVi tnesses:

PETER KEMPER, GEORGE G. KEMPER. 

